3256564164 has 96 divisors (see below), whose sum is σ = 9107185920. Its totient is φ = 886007808.

The previous prime is 3256564159. The next prime is 3256564169. The reversal of 3256564164 is 4614656523.

It is an interprime number because it is at equal distance from previous prime (3256564159) and next prime (3256564169).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (3256564169) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 168672 + ... + 186984.

It is an arithmetic number, because the mean of its divisors is an integer number (94866520).

Almost surely, 2^3256564164 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3256564164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4553592960).

3256564164 is an abundant number, since it is smaller than the sum of its proper divisors (5850621756).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3256564164 is a wasteful number, since it uses less digits than its factorization.

3256564164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18429 (or 18427 counting only the distinct ones).

The product of its digits is 518400, while the sum is 42.

The square root of 3256564164 is about 57066.3137411205. The cubic root of 3256564164 is about 1482.2446102310.

The spelling of 3256564164 in words is "three billion, two hundred fifty-six million, five hundred sixty-four thousand, one hundred sixty-four".